<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            font-size: 30px;
            color: #fff;
            /* background-color: black; */
            width: 250px; 
            height: 80px;
            line-height: 80px;
            text-align: center;
            border-radius: 10px;
            background: linear-gradient(to right ,#800080 ,blue);
            text-shadow:-1px -1px #C5DEF7,-0.8px -0.8px #C5DEF7,-0.6px -0.6px #C5DEF7,-0.4px -0.4px #C5DEF7,-0.2px -0.2px #C5DEF7
        }
    </style>
</head>
<body>
    <div>
        HTML5+CSS3
    </div>
</body>
</html>